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When I first got them they were doing great but the past few weeks even before I moved they seem smaller and not all of them seem to be opening. I've tried different areas of the tank and everything. Also my colt coral I think it is was doing awsome but since I moved and put it in my 34g it hasn't been doing as well but I think it was the position it was at the bottom of the tank and before I just left for vacation I moved it to the top and in a few hours it looked better.